1123230012 has 24 divisors (see below), whose sum is σ = 2635516800. Its totient is φ = 372317616.

The previous prime is 1123229993. The next prime is 1123230041. The reversal of 1123230012 is 2100323211.

It is a junction number, because it is equal to n+sod(n) for n = 1123229973 and 1123230000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259312 + ... + 263607.

It is an arithmetic number, because the mean of its divisors is an integer number (109813200).

Almost surely, 2^1123230012 is an apocalyptic number.

1123230012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1123230012 is an abundant number, since it is smaller than the sum of its proper divisors (1512286788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123230012 is a wasteful number, since it uses less digits than its factorization.

1123230012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523105 (or 523103 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1123230012 is about 33514.6238528795. The cubic root of 1123230012 is about 1039.4961847198.

Adding to 1123230012 its reverse (2100323211), we get a palindrome (3223553223).

The spelling of 1123230012 in words is "one billion, one hundred twenty-three million, two hundred thirty thousand, twelve".